Chosen Solution
I bought a replacement battery from iFixit in January this year, today was my first opportunity to change the battery, completed the process successfully so I thought, but nothing happened when I tried to power up. (Wondering if it’s the fact I’ve waited 10 months?) Macbook worked when I connected mains magsafe. What could be the problem? Photo showing new battery fitted and screen shot of no charge even after mains connected for 1 hour
Update (10/10/2022) Hi Dan Only offered these apps when I enter Coconut Battery in search
Opened the back again, disconnected then reconnected the battery connector making sure I pressed down… Replaced the rear cover, connected the magsafe mains supply and it’s now showing a charging battery… Happy Day’s
Update (10/10/2022) Thought I’d cracked it, charged up to and beyond the 2 1/2 hours to take the battery to 100% , was attempting to do the Battery Calibration recommended by iFixit so removed the MagSafe power and MacBook went off, nothing happened when I pressed the power on key.. Put MagSafe lead back on now MacBook just keeps going through the start up Apple logo white power up line but switches off as soon as it gets to the end over and over again… What the hell’s gone wrong ☹️😢 Update (10/11/2022)
These are the details from Coconut Battery
OK, let’s give this a try, carefully disconnect the battery from the logic board, with nothing connected press and hold the power button for a good 15 secs to discharge the logic board. Now carefully plug in the MagSafe charger, your system should spontaneously start, let it finish and do a proper shutdown. Now reconned the battery and restart your system. Let it run a good 10 minutes off battery and take a fresh CoconutBattery snapshot, now plug in the MagSafe charger the system should start charging the battery again, take one more snapshot and post both here for us to see.
I’ve done exactly as you’ve said, and everything seems to be working like brand new, I’m so thankful I felt really low the prospect of being without my Macbook after 9 years.. here are the screenshots Running on Battery and Magsafe connected
Thank you again for your help and patience Kind regards Anthony I’ll let the battery empty now for Calibration : )